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SUMMARY:Taking control of flowing dense suspensions - Dr Chris Ness (Unive
 rsity of Cambridge)
DTSTART:20171005T103000Z
DTEND:20171005T113000Z
UID:TALK78321@talks.cam.ac.uk
CONTACT:Catherine Pearson
DESCRIPTION:Many soft matter systems including sandpiles and suspensions s
 hare the property of fragility: due to their history-dependent microstruct
 ural conformation\, they can sustain stresses more effectively in some dir
 ections than in others. By continually updating the direction of flow one 
 might maintain structure-stress incompatibility\, thus inhibiting the form
 ation of load-bearing structures. Here we provide evidence for fragility o
 f this kind in a generic suspension and demonstrate\, indeed\, that the vi
 scosities of such materials are consequently susceptible to time-varying f
 lows. We thus propose several approaches to achieving `online' viscosity c
 ontrol in the processing of such materials.\n
LOCATION:Open Plan Area\, BP Institute\, Madingley Rise CB3 0EZ
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